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Finding the Fourth Proportional to 1,820.64, 2,732.04 and 955.20

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Solution

The fourth proportional to 1,820.64, 2,732.04 and 955.20 is: 1,433.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.64 : 2,732.04 = 955.20 : x
  2. Step 2: Convert to fraction form
    1,820.64/2,732.04 = 955.20/x
  3. Step 3: Cross multiply
    1,820.64x = 2,732.04 × 955.20
  4. Step 4: Simplify right side
    1,820.64x = 2,609,644.61
  5. Step 5: Solve for x
    x = 2,609,644.61/1,820.64
  6. Step 6: Final answer
    x = 1,433.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.